Creatine, a popular nutritional supplement used by weightlifters and sprinters to improve athletic performance, could lend muscle strength to people with muscular dystrophies.
Muscle strength increased by an average of 8.5 percent among patients taking creatine, compared to those who did not use the supplement, according to a recent review of studies. Creatine users also gained an average of 1.4 pounds more lean body mass than nonusers.
The evidence from the studies ?shows that short- and medium-term creatine treatment improves muscle strength in people with muscular dystrophies and is well-tolerated,? said lead reviewer Dr. Rudolf Kley of Ruhr University Bochum in Germany.
The review appears in the latest issue of The Cochrane Library, a publication of The Cochrane Collaboration, an international organization that evaluates medical research. Systematic reviews draw evidence-based conclusions about medical practice after considering both the content and quality of existing medical trials on a topic.
Creatine is found naturally in the body, where it helps supply energy to muscle cells. Athletes looking for short bursts of intense strength have used creatine in powders or pills for decades, but the supplement became more popular after the 1992 Barcelona Olympics, when sprinters, rowers and cyclists went public with their creatine regimens.
Although creatine has been widely studied as a performance enhancer, it?s still not clear if the supplement makes a difference, according to Roger Fielding, Ph.D., of Tufts University, who has also recently written a review of creatine treatments for neuromuscular diseases.